Fluid-pressure regulator.



P. H. BROWN.

FLUID PRESSURE REGULATOR.

APPLICATION FILED NOV. 11 19 0a.

' Patentd Nov. 9,1909.

- I I I I mmnmnun "In H instead of a. straight line as in prior devicesFRANCIS H. BROWN, OFPHILADELBI-IlA, PENINSYL VANIAL FLUIP-PRES$UBEsneer-anon,

esaivo.

Specification of Letters Patent. Patented NOV, 9,1909.

Application filed November 11, 1908. Serial No. 462,001.

To all whom it may concern: x

Be it known that I, FRAN cm H. Brown, a citizen of the United States,residing in the city and county of Philadelphia, btate of Pennsylvania,have invented'a new and useful l luid lressure Regulator, of which thefollowing is a specification. My present invention consists of a novelconstruction of an automatic fluid pressure regulator which-is extremelysensitive and which actuates in a very reliable manner under a veryslight variation in pressure.

it further consists of a novel construction of a fluid pressureregulator in which the actuating arm or member is in engagement with thediaphragm so as to move in unison therewith and in which said lever isso ful cruined and balanced that the great weight which the diaphragm isobliged to move in devices of this kind as ordinarily constructed isdispensed with and a very slight variation in pressure .will actuate thearm and the end of the arm contacting with the diaphragm will move inthe are of a circle with which I am. familiar.

it further consists of anovel construction of a fluid pressureregulator, in which weights and counterweights are dispensed with,consisting of a casing provided with a flexible diaphragm formingthereby two independent compartments one of which is adapted to beconnected with fluid under a constant pressure, the other compartmentthereof beingadapted to be connected with thecontrolling medium, meansbeing provided for actuating any desired mechanism in unison with themovement of the flexible diaphragm and means being also provided forlimiting the movement of such diaphragm in either direction.

It further consists of other novel features of construction, all as willbe hereinafter fully set forth. A

F or the purpose of illustrating my invention, I have shown in theaccompanying drawings one form thereof which is at present preferred byme, since the same gives in practice satisfactory and reliable results,although it is to be understood that the various instrumentalities ofwhich my invention consists can be variously arranged and organized andthat my invention is not limited to the exact arrangement andorganization. of these instrumentalities as herein set forth.

Figure 1 represents asectional elevation V of a regulating mechanismembodying I I 1 invention, showing the same as operatively connectedwith a valve and provided with a motor for controlling said valve andcontrolled by said regulating mechanism. Fig. 2 represents a plan viewof Fig; l.

Similar numerals of reference "indicate the casing member 2 andcommunicating with any suitable fluid under pressure.

8 designates a conduit extending through the casing section 3andcommunicating with the steam or other fluid pressure which it isdesired to regulate.

For the purpose of illustration, I have preferredto show in the presentinstance, a flexible container 9,composed of rubber or other suitablematerial and provided with a central diaphragm 10, thereby dividing thecontainer 9 into the two independent compartments 11 and 12. The arm ormember 15 may be movably secured to the central diaphragm 10 in anydesired manner and in the present instance, 1 have shown the centraldiaphragm 10 as being split in order to form the two flaps 13 and labetween which is inserted the arm or member 15. The arm 15 is rigidlysecured to the shaft- 16 which .is journaled in an enlargement 17 on the21 to one end of a" lever 22, the other end of said lever 22 beingadjustably pivoted at 23 by means of a block 24: adjustably secured toan apertured arm 25 carried by the motor casing 26. The motor shown inthe present instance corresponds to a well known device,

although it is to be understood that any other type of motor mechanismmay be em- I the .piston rod 31 Will actuate the lever 33 ployed eitherelectrical or otherwise and since the motor shown is a well known type,I have deemed itunnecessary to give a detailed description thereof,since the same forms per so no part of my present invention.

27 designates a valve stem which controls a valve Within the casing 26to admit motive fluid to move a piston within the casing 26, said pistonhaving pivoted thereto a piston rod 31 pivoted at 32 to the lever 33which latter is fulcrumed at 34 to a suitable fixed point such as thebracket 35.

36 designates a cable passing over the pulley 37 and connected with 'oneend of r a lever 38 secured to a damper or valve 39 located intheconduit 40. I 41 designates a cable one end of which is secured to thelever 33, said cable passing over a pulley 42 and having its other endconnected with the lever 38 as will be readily' understood from Fig. 1.

The diaphragm, 10 is preferably provided with lugs 43 and 44 on oppositesides thereof, these lugs being made preferably of resilient materialand serving to limit the movement of the diaphragm 10 in eitherdirection, since if some devic is not employed for limiting the movementof the diaphragm, the latter would be liable to injury if the fluidpressure supply to one of the compartments 11 or 12 should be suddenlycut on".

The operation of my novel construction of fluid pressure regulator willnow be readily apparent to those skilled in this art-and is as follows:The compartment 11 is supplied with air or other fluid under a constantpressure and the compartment 12 with fluid under a variable pressureWhen the pressureof the fluid in the compartment 12 increases ordiminishes the diaphragm 10 will be correspondingly actuated therebyrocking the arm'l5 and the shaft 16 and causing the arm 20 to' rock thelever 22, whereupon the-valve stem 27 is actuated and fluid underpressure will be admitted or discharged from the conduits 28 and.29 sothat the valve 39 within the conduit 40 will be regulated in unison withthe movem nt of the diaphragm 10. I

It is to be understood that the specification and claims where I speakof a pressure regulator, this term is to be construed in its broadestscope as including a regulator which may be used either dynamically orstatically. My novel regulator. may be employed as the prime mover foroperating and controlling any desired mechanism, or it may be acted uponto receive or compensate shocks or vibration of a load, or it may beemployed as a regulating device to produce a uniform speed of theoperating mechanand, owing to the cables 36 and tl'being operativelyconnected with the valve rod 38,v

ism or to maintain a uniform condition ot fluid pressure or equivalentpurposes, without departing from the spirit or Hope of my invention.

It will now be apparent that I have devised a novel and usefulconstructimi which embodies the features of advantage cnumcn atcd asdesirable in the statement of the ill-- vention and the above'dcscription, and while I have in the present instance shown and dc scribedthe'preferred embmlim'ent thereof which has been found in practice togive satisfactory and reliable results, it is to be understood that. thesame is susceptible of modification in various particulars withoutdeparting from the spirit or scope of the.

invention or sacrificing any oi its advair tages. Having thus describedmy invention, what I claim as new and desire to secure by Let-- tersPatent, is V i 1. In combination, a diaphragm casing, a. diaphragmtherein subject: to pressure on both sides, a rotary shaft mounted inthe casing, and an arm directly connecting said diaphragm to said shaftand moving in the arc of a circle. I

2. In a device of the character described,

the combination of a movable mei'nbcr sub ject .to pressure on bothsides, and a second member suitably fulcrumcd and having one .enddirectly contacting with the movable member whereby the contact ng endmoves in the arc of a circle.

3. In a device of the character described,

the combination of a movable member Subject to pressure on both sides, asecond mern ber suitably fulcrumed and havin one end directly contactingwith the'mov lile mem berrwhcreby said contacting end moves in the arcof a circle, a counterbalance for said second member, and mechanismoperatively connected with said second member.

i. In a fluid pressure regulator, a rigid container, a flexiblecontainer therein having two independent compartments and a diaphragmseparating said compartments, a pivoted arm havingone end a war s incontact with said diaphragm, means "tor admit ting. a constant fluidpressure to one of said compartments, and means for admitting a variablefluid to the other of said compartments.

5. In a fluid pressure regulator, a rigid container, a flexiblecontainer therein. having two independent compartments and a diaphragmseparating said compartments, a pivoted arm having one end always incontaet with said diaphragm, means for admitting a constant fluidpressure to one of said compartments, means for admitting a variablefluid to the'other of said compartments,

and means for limiting thev movement of said diaphragm in eitherdirection.

6. In a fluid pressure regulator, a din a diaphragm forming diaphragmtravels in the are of acircle.

7. In a fluid pressure regulator, a diaphragm having a portion thereofsplit, and

a pivoted armhaving. one end inserted in said split portion, saiddiaphragm being acted upon in one direction by a constant pressure, andin the opposite direction by a variable pressure.

8. In a fluid pressure regulator, a rigid container, a flexiblecontainer thereinhaving a diaphragmforming two sealed compartments, apivoted arm having one end in trid 't'ional engagement with saiddiaphragm,

means for admitting a constant pressure 3b one of said compartments, andmeans for mitting a variable pressure to the other of said compartments.p

t). In a fluid pressure regulator, a, rigid container, a flexiblecontainer therein having two. sealed compart inents, said diaph-aginhaving a portion" thereof intwo parts, a pivoted arm having one end entending between said parts and moving in unison with said diaphragm, meansfor admitting a constant fluid pressure to one of said compartments, andmeans for admitting a variable pressure to. the other of saidcompartments; I

10. In a device of the character described, a container,'a diaphragmtherein dividing the latter into two compartments, each of which hasliuid pressure therein, a member movably supported and having one endengaging the; diaphragm and moving in unisoii therewith, said end movingin the are of a circle, and a load controlled bysaid member whereby anymovement of the load is resisted by the pressure on opposite sides ofthe diaphragm.

11. In a device of the character described, a container, a diaphragmtherein dividing thecontainer into two independent compart ments, eachcompartment having fluid pressure therein, a member movably mounted andhaving one end in engagement with thy. diaphragm, whereby a variation ofpressure in said compartments causes said end to move in ,nnisontherewith and in the are of a circle, and mechanism actuated by saidmember.

12. In a fluid pressure regulator, a container, a diaphragm thereindividing the container into two compartments adapted to receive fluidpressure, a member movably mounted and having one end in engagement withthe diaphragm, whereby a variation of pressure in the compartinentscauses said end to move in unison therewith and in the a circle, and amotor :wtuated by said member;

. IF tANClS ll. BlZtHVN. lVitnesses H. S. FAIRBANKS, (l. D. MOVAY.

